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1
Content available Analysis of the efficiency and effectiveness of the municipality-owned public bus transport service enterprise in Addis Ababa, Ethiopia
Girma Mulugeta
Zeszyty Naukowe. Transport / Politechnika Śląska
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2023
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z. 120
93--104
EN
To make decisions and exercise managerial control over the degree of input utilization, and produce desired outputs, it is important to assess the efficiency and effectiveness of the municipality-owned public transit service operators. This study uses the Data Envelopment Analysis approach to assess the efficiency and effectiveness of the public transit companies operated by the city administration in Addis Ababa. The size of the fleet and the total number of personnel serve as inputs, and covered vehicle kilometers and the number of passengers carried annually serve as outputs. Based on secondary information gathered from each firm, the technical efficiency and operational effectiveness of service providers are then examined. The study's findings show that the Anbessa city bus was efficient in using resources to produce output in 2019/20 and 2021/22, but wasteful in other years. In the same way, the Sheger City Bus was efficient in 2017/18 and 2021/22 but ineffective in all other years. However, the aggregate findings show that both research's efficiency levels are rising annually. Besides, with mean scores of 0.85 and 0.874, respectively, Anbessa and Sheger Bus were technically flawed. On the other side, operational effectiveness reveals that the Anbessa city bus was only effective in 2021/22. Furthermore, the Sheger city bus' effectiveness result has improved and started to be effective in 2017/18, 2018/19, and 2021/22. In conclusion, the Anbessa and Sheger city buses' efficiency and effectiveness ratings improved year over year and peaked in 2021/22. Hence, to support the business and boost its operational capabilities, the city administration should encourage public bus transit operators in the city and offer subsidies and other incentives to them based on their existing performance.
2
Content available The Simplest Models of the Macroeconomics Dynamics in a Composition with the Principle of the Subjective Entropy Maximum
Kasianov Vladimir Aleksandrovich, Goncharenko Andriy Viktorovich
Transactions on Aerospace Research
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2023
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Nr 1 (270)
10--21
EN
This paper proposes a solution to a certain macroeconomic model. A multi-alternative problem of aviation transportation optimal organisation in conditions of uncertainty of the subjective preference functions is considered. Conditional optimisation of the objective functional containing the entropy of the individuals’ operational effectiveness functions preferences is carried out in the framework of the simplest macroeconomic problem. The principle of the Solow and Cobb-Douglas models, similar to the approach adopted for the estimation of economic growth, is modified with the subjective entropy maximum principle. The advantages of the described optimisation approach are demonstrated in the generalised terms of the operational effectiveness functions for aviation transportation organisation.
3
Content available Development of the Airline Business Macroeconomics Dynamics Models
Kasianov Vladimir, Goncharenko Andriy
Transactions on Aerospace Research
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2023
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Nr 2 (271)
25--32
EN
This paper proposes a solution to a certain macroeconomic model. A multi-alternative problem of aviation transportation optimal organisation in conditions of uncertainty of the subjective preference functions is considered. Conditional optimisation of the objective functional containing the entropy of the individuals’ operational effectiveness functions preferences is carried out in the framework of the simplest macroeconomic problem. The principle of the Solow and Cobb-Douglas models, likewise for economic growth, is modified with the Subjective Entropy Maximum Principle. The advantages of the described optimisation approach are demonstrated in generalised terms of the operational effectiveness functions for aviation transportation organisation.
4
Content available Solving a Certain Two-Alternative Problem in the Optimal Organization of Aviation Transportation in Conditions of Uncertainty
Goncharenko Andriy Viktorovich
Transactions on Aerospace Research
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2022
|
Nr 1 (266)
66--74
EN
This paper proposes a solution to a certain two-alternative problem of aviation transportation optimal organization in conditions of uncertainty of the subjective preference functions. Conditional optimization of the objective functional containing the entropy of the individuals’ operational effectiveness functions preferences is carried out in the framework of the simplest variational problem. The advantages of the described optimization approach are demonstrated in the generalized terms of the operational effectiveness functions for aviation transportation organization.
5
Sprawność paneli fotowoltaicznych
Katolik Zygmunt
Budownictwo i Prawo
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2021
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R. 25, nr 3
24--29
PL
W artykule zwrócono uwagę na czynniki, które wpływają w istotnym stopniu na efektywność pracy instalacji fotowoltaicznych oraz ukazano skutki wynikające z przewymiarowania lub niedoszacowania tych instalacji. Wskazano typowe rozwiązania dla instalacji fotowoltaicznych.
EN
The article focuses on factors that significantly affect the efficiency of photovoltaic installations and shows the consequences of oversizing or undersizing these installations. Typical solutions for photovoltaic installations are indicated.
6
Content available remote Kontrola sprawności wentylacji przy użyciu termowizji
Stachniewicz Robert
Materiały Budowlane
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2019
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nr 1
38--41
PL
W artykule zaprezentowano zastosowanie termowizji do kontroli poprawnej pracy wentylacji naturalnej w mieszkaniach. Na podstawie termogramów wykonanych zimą w mieszkaniu oraz pomiaru prędkości ruchu powietrza przed kratkami wentylacyjnymi dokonano analizy działania wentylacji. Do celów analizy opracowano termogramy miejsc napływu powietrza do mieszkania (rozszczelnione okna) i jego odpływu (kratki wentylacyjne). Sporządzono też symulację ciągu odwróconego przez jeden z kanałów wentylacyjnych i termogramy takich przypadków. Przypadek wadliwego działania wentylacji naturalnej spotyka się często w budynkach mieszkalnych. Termowizja jest szybką metodą weryfikacji poprawnego działania wentylacji naturalnej. W przypadku nieprawidłowości umożliwia również wskazanie przyczyn niesprawności.
EN
The article presents the use of thermovision to control the correct work of natural ventilation in apartments. On the basis of the thermograms made in the winter season in the selected apartment and the measurement of the air movement speed on the ventilation grilles, the ventilation operation was analyzed. For the purposes of the analysis, thermograms were made for the places of air inflow into the flat (unsealed windows) and air outflow (ventilation grates). The simulation of the reverse sequence through one of the ventilation ducts was also performed and thermograms of such cases were attached. This case of malfunctioning of natural ventilation is often found in residential buildings. Thermovision is a quick method to determine the proper functioning of natural ventilation. In cases of irregularities in its work, it also enables identification of the causes of its malfunction.
7
Content available Jakość kształcenia w zakresie bezpieczeństwa pochodną sprawnie funkcjonującej administracji publicznej w sytuacjach kryzysowych
Kosowski B.
Zeszyty Naukowe SGSP / Szkoła Główna Służby Pożarniczej
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2011
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Nr 42
127--140
PL
Transformacja systemu szkolnictwa wyższego, która jest realizowana w Polsce w ostatnich latach ma na celu nie tylko dostosowanie kształcenia do Zasad Bolońskich, ale również ma podnieść jakość usługi jaką jest nauczanie na studiach wyższych. Wysoki poziom jakości kształcenia w zdecydowanym stopniu wpływa bowiem na sprawność funkcjonującej administracji publicznej w stanach normalnych oraz w sytuacjach kryzysowych.
EN
The article presents the theoretical frame work relating to the quality of education at higher education institutions. The author pays attention to the transformation of the system of higher education, which began in Poland a couple of years ago and which aims at adjusting the Polish education system to the Bologna principles and at improving the quality of higher education. The high quality of education has a considerable impact on the operational effectiveness of public administration under normal conditions and in crisis situations. The empirical research presented in the article confirms the validity of the assumption made. The final conclusions provide guidelines for higher education institutions and for the heads of public administration within the system of the management of the state.
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